<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <!-- 
        method:指定当前表单提交的方式
        action:指定当前表单提交的地址
     -->
    <form method="post" action="http://localhost:3000/">
        <input type="text" name="username" id="">
        <input type="password" name="password">
        <input type="submit">
    </form>
</body>

</html>